Author: Andrew Nicols
MDL-62370 core_privacy: Directory-less subsystems are compliant
http://git.moodle.org/gw?p=moodle.git;a=commit;h=502344a90483a35719d443750579520ee41573bc
http://github.com/moodle/moodle/commit/502344a90483a35719d443750579520ee41573bc
+ 3.5 en [privacy:subsystem:empty,core_privacy]